package Thread;

import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;

/**
 * Created with IntelliJ IDEA.
 * Description: Callable的练习
 */
public class ThreadDemo35 {
    public static void main(String[] args) {
        Callable<Integer> callable = new Callable<Integer>() {
            @Override
            public Integer call() throws Exception {
                int sum = 0;
                for(int i = 1; i <= 1000; i++) {
                    sum += i;
                }
                return sum;
            }
        } ;
        FutureTask<Integer> task = new FutureTask<>(callable);
        Thread t = new Thread(task);
        t.start();
        try {
            System.out.println(task.get());
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        } catch (ExecutionException e) {
            throw new RuntimeException(e);
        }
    }
}
